Abstract: Urban greenways are restricted by urban built-up environments and influenced by many factors. It is hard to judge whether the selected greenway route is the best scheme through subjective evaluation. A multi-source data fusion evaluation method is necessary to meet the actual demand in planning. This research, with urban greenway as objective, based on the analysis of domestic and foreign researches and practice of urban greenways planning, apply the analytic hierarchy process(ahp), Delphi method and other methods, establishes the importance weights of multi-factor comprehensive suitability evaluation model. Then, the quantitative evaluation method with the multi-element composite overlay analysis is recommended. In the end, on the basis of suitability evaluation model in the case of the Longgang district of Shenzhen City, the urban greenway planning layout optimization method using space superposition in GIS, as well as the hierarchical planning guidance is put forward, to provide scientific reference for the evaluation, planning and construction of urban greenways.